EVM430-FR6043: Ultrasonic Spirometry using MSP430FR6043 ultrasonic sensing evaluation module

Nilotpal Baruah

Part Number: EVM430-FR6043

Tool/software:

I want to use this board to develop a spirometer to measure human lungs's peak expiratory volume and other breathing parameters. Here, flow resolution of minimum 5 ml/sec is required. Will it be possible?

1 month ago

0 Cash Hao11 1 month ago

TI__Mastermind 46765 points

Hi,

5ml/sec equals 18L/h. It looks possible since for a residential gas meter the minimum flow rate can be around 12L/h. The issue for a spirometer from my point would be the pipe design.

Best regards,

Cash Hao

0 Nilotpal Baruah 1 month ago in reply to Cash Hao11

Prodigy 45 points

Can you please elaborate more on the pipe design aspects or point me to appropriate resources which can help me to optimize the pipe design aspects to get the desired sensitivity.

0 Cash Hao11 1 month ago in reply to Nilotpal Baruah

TI__Mastermind 46765 points

Hi,

We do not have much experience on the spirometer application. I suppose the pipe design is similar to the gas meter. You may need to control the humidity of the air. Put a sponge on the blower side would help. And the flow rate calibration with temperature would also need a lot of effort.

Best regards,

Cash Hao

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EVM430-FR6043: Ultrasonic Spirometry using MSP430FR6043 ultrasonic sensing evaluation module